Fifteen years ago, we released Doctor Who: The Sirens of Time, starting a tradition of audio storytelling for the worlds of Doctor Who and beyond. And so we get to the last day of the Big Finish 15 celebration. Over the last year we've launched some hugely popular and praised new versions of old shows, a couple of Big Finish heroines have had new releases, and we celebrated the 50th anniversary of Doctor Who with our own multi-Doctor story. Read on for offers, remembrances from Big Finish folks, and pre-orders on upcoming titles...

Win £250 of Big Finish digital products! Those of you at Big Finish Day 4 will know we've been planning to do a BIG survey. Well, it's here! We have 50 questions for you and the survey will take around 10-15 minutes. The answers are confidential and we will not be sharing the data with anyone. Please take part by following the link in the second part of this news story, and you could win £250 of digital Big Finish stuff of your choice!

Out now is the very first volume of The Avengers - The Lost Episodes. Starring Anthony Howell and Julian Wadham as Keel and Steed, it follows their adventures from their very first meeting in thrilling retro Sixties glory!

The first teaser trailer for The Avengers: The Lost Episodes is now online on its product page. Starring Anthony Howell and Julian Wadham as Dr Keel and John Steed, the audio range recreates the existing scripts of series one of The Avengers on audio with a full cast of actors.

Big Finish Productions has signed a licence with STUDIOCANAL to produce full cast audio productions of 12 lost episodes of the classic TV series The Avengers.

In the role of Dr David Keel will be Anthony Howell, who is perhaps best known for his role as Paul Milner in 21 episodes of Foyle’s War. Anthony is currently filming a part in the American series Dracula; his other work includes Dirk Gently and Dungeons and Dragons: The Book of Vile Darkness.

Playing John Steed is Julian Wadham, whose TV work includes Downton Abbey, Midsomer Murders, Middlemarch and Blind Justice. Julian has also appeared in the films The Iron Lady (as Francis Pym), War Horse, Maurice, The English Patient, The Madness of King George and Exorcist: The Beginning.

Big Finish has signed a licence with the estate of the acclaimed writer Terry Nation to make the 1970s post-apocalyptic drama Survivors on audio. The series ran for three seasons between 1975-77 and told the story of a small group of people who survive a plague that wipes out most of the world’s population.

It's the second month of The Listeners, an opportunity to discover (or revisit) a classic audio and discuss it with fellow fans as part of our audiobook club. This month it's the start of Dalek Empire: Invasion of the Daleks.